Bending forming material lifting device for progressive die

Abstract

The utility model relates to the technical field of progressive dies, in particular to a bending forming material lifting device for a progressive die, which comprises a lower die holder, a lower bending forming die, a material lifting plate, a first material lifting elastic piece and a material lifting mechanism. The material lifting mechanism comprises a cushion block arranged on the lower die base, a material lifting frame arranged on the cushion block in a lifting mode, a second material lifting elastic piece elastically connected between the material lifting frame and the cushion block, a rotary material lifting block rotationally connected to the material lifting frame and protruding into the bending forming tilting space, and a reset elastic piece elastically connected between the rotary material lifting block and the material lifting frame. According to the progressive die, the bent and formed workpiece on the material belt can be lifted, the bent and formed workpiece can be conveniently demolded, the problems that the material belt shakes, feeding is unstable and feeding is slow due to the fact that the fall of the workpiece on the material belt is large before and after forming are solved, and the efficiency of machining and producing the workpiece on the material belt through the progressive die is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of progressive dies, in particular to a bending and forming material lifting device used for progressive dies. Background Art

[0002] As the shape and structure of products become more and more complex, the requirements for progressive dies for forming products are also getting higher and higher. In the existing progressive die for processing and forming the workpiece on the material strip, when the progressive die is stamping and bending the workpiece on the material strip, one end (cantilever part) of the workpiece after stamping and bending will be lifted up, but because the cantilever part of the workpiece is in a suspended state, the workpiece after stamping and bending will sag and deform due to gravity, and the workpiece is in an unbalanced state, the feeding of the material strip is unstable, and the material is prone to jamming. In the existing patents, the Chinese patent document with application number 202120401196.0 discloses a lifting mechanism on a stamping die, including a base, a pad is installed on the top of the base; one end of the pad is connected to a lifting block through a pin, and a limit block is installed on the top of the pad to limit the reset position of the lifting block; a torsion spring is wrapped around the pin for resetting the lifting block. This patent document supports the parts before bending and forming, and cannot support and lift the parts after bending and forming. Therefore, the defects are very obvious and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a bending forming material lifting device for a progressive die.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A bending and forming lifting device for a progressive die, comprising a lower die base, a lower bending and forming die mounted on the lower die base, a lifting plate lifted and arranged above the top of the lower bending and forming die, a first lifting elastic member elastically connected between the lower bending and forming die and the lifting plate, and a lifting mechanism spaced apart from the lower bending and forming die, a bending and forming warping space being provided between the lower bending and forming die and the lifting mechanism, the lifting mechanism comprising a pad mounted on the lower die base, a lifting frame lifted and arranged on the pad, a second lifting elastic member elastically connected between the lifting frame and the pad, a rotating lifting block rotatably connected to the lifting frame and protruding into the bending and forming warping space, and a reset elastic member elastically connected between the rotating lifting block and the lifting frame.

[0006] Furthermore, a rotating groove is opened on the side wall of the lifting rack, and the inner end of the rotating lifting block is rotatably set in the rotating groove. The middle part of the rotating lifting block is rotatably connected to the inner wall of the rotating groove via a rotating shaft, and the outer end of the rotating lifting block protrudes into the bending forming warping space.

[0007] Furthermore, the reset elastic part is an L-shaped elastic glue, which is located above the rotating lifting block. The vertical part of the L-shaped elastic glue is installed on the lifting frame, and the horizontal part of the L-shaped elastic glue contacts the upper side surface of the outer end of the rotating lifting block; a limited position surface is set on the top surface of the inner end of the rotating groove; when the L-shaped elastic glue elastically stretches, the upper side surface of the inner end of the rotating lifting block contacts the limiting surface.

[0008] Furthermore, the resetting elastic member is a spring, one end of the spring is connected to the material lifting frame, and the other end of the spring is connected to the outer end of the rotating material lifting block.

[0009] Furthermore, the lower die base is provided with a lifting hole, and the bottom end of the material lifting rack can be inserted into the lifting hole.

[0010] Furthermore, a bending avoidance groove is concavely provided on the top surface of the lower die seat, and the bending avoidance groove is located in the bending forming warping space.

[0011] Furthermore, the top surface of the cushion block or the top and bottom surfaces of the material lifting rack are provided with limit blocks.

[0012] Furthermore, the first material lifting elastic member and the second material lifting elastic member are both nitrogen springs.

[0013] The beneficial effects of the utility model are as follows: the utility model can lift the workpiece after bending and forming on the material strip, which is convenient for demolding the workpiece after bending and forming, solves the problem of material strip shaking and unstable and slow feeding caused by the large drop of the workpiece before and after forming on the material strip, and improves the efficiency of the progressive die in processing and producing the workpiece on the material strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the changes of the workpiece before and after the bending and forming when the utility model is in the mold closing and bending forming state.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the utility model in a mold closing and bending forming state.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the utility model in a mold opening state after the workpiece is bent and formed.

[0017] Figure 4 It is a cross-sectional view of the material lifting mechanism of the utility model.

[0018] Description of reference numerals:

[0019] 1. Lower die base; 11. Lifting hole; 12. Bending avoidance groove; 2. Lower bending forming die; 3. Lifting plate; 4. First lifting elastic member; 5. Lifting mechanism; 51. Pad; 52. Lifting frame; 53. Second lifting elastic member; 54. Rotating lifting block; 55. Resetting elastic member; 56. Rotating groove; 57. Limiting surface; 58. Limiting block; 6. Bending forming warping space; 7. Workpiece. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0021] like Figures 1 to 4 As shown, the utility model provides a bending and forming lifting device for a progressive die, which includes a lower die base 1, a lower bending and forming die 2 mounted on the lower die base 1, a lifting plate 3 lifted and arranged above the top of the lower bending and forming die 2, a first lifting elastic member 4 elastically connected between the lower bending and forming die 2 and the lifting plate 3, and a lifting mechanism 5 spaced apart from the lower bending and forming die 2, a bending and forming tilting space 6 is provided between the lower bending and forming die 2 and the lifting mechanism 5, the lifting mechanism 5 includes a cushion block 51 mounted on the lower die base 1, a lifting frame 52 lifted and arranged on the cushion block 51, a second lifting elastic member 53 elastically connected between the lifting frame 52 and the cushion block 51, a rotating lifting block 54 rotatably connected to the lifting frame 52 and protruding into the bending and forming tilting space 6, and a reset elastic member 55 elastically connected between the rotating lifting block 54 and the lifting frame 52.

[0022] In actual application, the upper die seat of the progressive die is lifted and arranged above the utility model, the head end of the material strip can move along the lifting plate 3, a plurality of cantilevered workpieces 7 are arranged on the material strip, and the end of the workpiece 7 away from the head of the material strip extends into the bending and forming tilting space 6, and the bottom surface of the upper die seat is equipped with an upper bending and forming die and a first elastic downward pressure block and a second elastic downward pressure block, the upper bending and forming die is arranged correspondingly to the lower bending and forming die 2, and the upper bending and forming die is used to cooperate with the lower bending and forming die 2 for bending and forming, the first elastic downward pressure block is arranged correspondingly to the lifting plate 3, the first elastic downward pressure block is used to apply downward pressure to the lifting plate 3, the second elastic downward pressure block is arranged correspondingly to the top of the lifting frame 52, and the second elastic downward pressure block is used to apply downward pressure to the lifting frame 52 Apply downward pressure; in actual use, the upper mold base and the lower mold base 1 are in the mold opening state, the first material lifting elastic member 4 and the second material lifting elastic member 53 are both in the extended state, and the material lifting plate 3 lifts the material head of the material strip under the action of the first material lifting elastic member 4, and the material lifting frame 52 drives the rotating material lifting block 54 to be in a raised state under the action of the second material lifting elastic member 53, and the rotating material lifting block 54 lifts and supports the end of the workpiece 7 on the material strip that has been bent and formed away from the material head (the cantilevered part of the workpiece 7 that is tilted after bending and forming) under the action of the reset elastic member 55, which is conducive to the material strip to move stably along the material lifting plate 3, so that the next workpiece 7 on the material strip (the workpiece 7 to be bent and formed) moves to the top of the lower bending and forming mold 2, and the cantilevered part of the workpiece 7 The upper and lower mold bases 1 and 1 are located in the bending and forming lifting space 6, and the bottom end of the cantilever portion of the workpiece 7 is located below the rotating lifting block 54. At this time, the upper mold base and the lower mold base 1 are molded together. As the upper mold base moves downward, the first elastic pressing block on the upper mold base will press down the lifting plate 3, so that the lifting plate 3 compresses the first lifting elastic member 4 and moves downward, and the second elastic pressing block will press down the lifting frame 52, so that the lifting frame 52 compresses the second lifting elastic member 53 and drives the rotating lifting block 54 and the reset elastic member 55 to move downward, and the upper bending and forming mold and the lower bending and forming mold 2 bend and form the bending and forming portion of the workpiece 7. During the bending and forming process, the cantilever portion of the workpiece 7 will bend upward along with the bending and forming portion. During the upward bending and forming process of the cantilever portion of the workpiece 7, the cantilever The part will apply an upward force to the outer end of the rotating lifting block 54, so that the rotating lifting block 54 will squeeze the reset elastic member 55 and rotate upward until the cantilever portion is located above the outer end of the rotating lifting block 54, and the rotating lifting block 54 will reset and rotate under the action of the rebound force of the reset elastic member 55. After completing the bending and forming of the workpiece 7, the upper die base and the lower die base 1 are opened, and the lifting plate 3 will lift the material head of the material strip under the action of the rebound force of the first lifting elastic member 4, and the rotating lifting block 54 will lift the cantilever portion of the workpiece 7 under the action of the rebound force of the second lifting elastic member 53, thereby demolding the workpiece 7 after bending and forming, and the forces at both ends of the workpiece 7 after bending and forming are balanced, which is conducive to the stable and smooth movement of the material strip.The utility model can lift the workpiece 7 after bending and forming on the material strip, which is convenient for demolding the workpiece 7 after bending and forming, solves the problem of material strip shaking and unstable and slow feeding caused by the large drop of the workpiece 7 before and after forming on the material strip, and improves the efficiency of the progressive die in processing and producing the workpiece 7 on the material strip.

[0023] In this embodiment, a rotating groove 56 is formed on the side wall of the material lifting frame 52, and the inner end of the rotating material lifting block 54 is rotatably disposed in the rotating groove 56. The middle part of the rotating material lifting block 54 is rotatably connected to the inner wall of the rotating groove 56 via a rotating shaft, and the outer end of the rotating material lifting block 54 protrudes into the bending and forming warping space 6. This structural design makes the structure between the material lifting frame 52 and the rotating material lifting block 54 compact, and facilitates the rotation of the rotating material lifting block 54 relative to the material lifting frame 52.

[0024] In this embodiment, the reset elastic member 55 is an L-shaped elastic glue, which is located above the rotating lifting block 54. The vertical part of the L-shaped elastic glue is installed on the lifting frame 52, and the horizontal part of the L-shaped elastic glue is in contact with the upper side surface of the outer end of the rotating lifting block 54; the inner end top surface of the rotating groove 56 is provided with a limited position surface 57; when the L-shaped elastic glue elastically stretches, the upper side surface of the inner end of the rotating lifting block 54 is in contact with the limiting surface 57; preferably, the L-shaped elastic glue can be made of high-strength glue.

[0025] In actual application, when the L-shaped elastic glue elastically stretches, the horizontal part of the L-shaped elastic glue contacts the upper side surface of the outer end of the rotating lifting block 54, and the upper side surface of the inner end of the rotating lifting block 54 contacts the limiting surface 57, so that the rotating lifting block 54 obliquely protrudes into the bending forming lifting space 6, so that the rotating lifting block 54 can stably lift the cantilever part of the workpiece 7; when the cantilever part of the workpiece 7 is in the process of tilting upward, the cantilever part squeezes the lower side surface of the outer end of the rotating lifting block 54, so that the outer end of the rotating lifting block 54 rotates upward and squeezes the horizontal part of the L-shaped elastic glue, so that the horizontal part of the L-shaped elastic glue undergoes a recoverable elastic deformation until the cantilever part is located above the outer end of the rotating lifting block 54, the horizontal part of the L-shaped elastic glue will undergo elastic recovery and drive the rotating lifting block 54 to reset and rotate until the upper side surface of the inner end of the rotating lifting block 54 contacts the limiting surface 57.

[0026] In other embodiments, the reset elastic member 55 is a spring, one end of which is connected to the lifting frame 52, and the other end of which is connected to the outer end of the rotating lifting block 54. In practical applications, when the spring is in an extended state, the spring pulls or presses against the outer end of the rotating lifting block 54. Preferably, the inner upper side surface of the rotating lifting block 54 abuts against the limiting surface 57 provided on the inner top surface of the rotating groove 56, so that the rotating lifting block 54 can stably lift the cantilever portion of the workpiece 7 after bending and forming; when the cantilever portion of the workpiece 7 is in the process of tilting upward, the cantilever portion squeezes the outer lower side surface of the rotating lifting block 54, so that the outer end of the rotating lifting block 54 rotates upward and squeezes or stretches the spring until the cantilever portion is located above the outer end of the rotating lifting block 54, and the spring elastically recovers and drives the rotating lifting block 54 to reset and rotate until the inner upper side surface of the rotating lifting block 54 abuts against the limiting surface 57.

[0027] In this embodiment, the lower die base 1 is provided with a lifting hole 11, and the bottom end of the material lifting frame 52 can be inserted into the lifting hole 11. This structural design makes the structure of the material lifting frame 52 and the lower die base 1 compact, reduces the volume of the progressive die, and prevents the material lifting frame 52 from having a hard impact collision with the lower die base 1.

[0028] In this embodiment, the top surface of the lower die base 1 is concavely provided with a bending avoidance groove 12, and the bending avoidance groove 12 is located in the bending forming warping space 6. When the workpiece 7 is not bent and formed, the cantilever portion of the workpiece 7 hangs down into the bending avoidance groove 12; when the bending forming portion of the workpiece 7 is bent and formed, the cantilever portion of the workpiece 7 will bend upward and move away from the bending avoidance groove 12. This structural design prevents the cantilever portion of the workpiece 7 from having a hard impact collision with the lower die base 1.

[0029] In this embodiment, a limit block 58 is installed on the top surface of the cushion block 51 or the top and bottom surfaces of the material lifting frame 52. In practical applications, when the top of the material lifting frame 52 contacts the limit block 58, or when the bottom surface of the limit block 58 contacts the top surface of the cushion block 51, it proves that the upper die base and the lower die base 1 are in place, and the bending forming part of the workpiece 7 is bent and formed.

[0030] In this embodiment, the first material lifting elastic member 4 and the second material lifting elastic member 53 are both nitrogen springs.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A bending and forming lifting device for a progressive die, characterized in that: The invention comprises a lower die base (1), a lower bending and forming die (2) mounted on the lower die base (1), a material lifting plate (3) arranged to be lifted and lowered above the top of the lower bending and forming die (2), a first material lifting elastic member (4) elastically connected between the lower bending and forming die (2) and the material lifting plate (3), and a material lifting mechanism (5) arranged at a distance from the lower bending and forming die (2), a bending and forming warping space (6) is provided between the lower bending and forming die (2) and the material lifting mechanism (5), and the material lifting mechanism (6) is provided to lift the material. The mechanism (5) comprises a cushion block (51) mounted on the lower die base (1), a material lifting frame (52) lifted and lowered on the cushion block (51), a second material lifting elastic member (53) elastically connected between the material lifting frame (52) and the cushion block (51), a rotating material lifting block (54) rotatably connected to the material lifting frame (52) and protruding into the bending and forming warping space (6), and a reset elastic member (55) elastically connected between the rotating material lifting block (54) and the material lifting frame (52).

2. The bending and forming material lifting device for a progressive die according to claim 1, characterized in that: A rotating groove (56) is provided on the side wall of the material lifting frame (52), and the inner end of the rotating material lifting block (54) is rotatably arranged in the rotating groove (56). The middle part of the rotating material lifting block (54) is rotatably connected to the inner wall of the rotating groove (56) via a rotating shaft, and the outer end of the rotating material lifting block (54) protrudes into the bending forming warping space (6).

3. The bending and forming material lifting device for a progressive die according to claim 2, characterized in that: The resetting elastic member (55) is an L-shaped elastic rubber, which is located above the rotating lifting block (54). The vertical portion of the L-shaped elastic rubber is installed on the lifting frame (52), and the horizontal portion of the L-shaped elastic rubber abuts against the upper side surface of the outer end of the rotating lifting block (54); a limiting surface (57) is provided on the top surface of the inner end of the rotating groove (56); when the L-shaped elastic rubber elastically stretches, the upper side surface of the inner end of the rotating lifting block (54) abuts against the limiting surface (57).

4. The bending and forming material lifting device for a progressive die according to claim 2, characterized in that: The resetting elastic member (55) is a spring, one end of which is connected to the material lifting frame (52), and the other end of which is connected to the outer end of the rotating material lifting block (54).

5. The bending and forming material lifting device for a progressive die according to claim 1, characterized in that: The lower die base (1) is provided with a lifting hole (11), and the bottom end of the material lifting frame (52) can be inserted into the lifting hole (11).

6. The bending and forming material lifting device for a progressive die according to claim 1, characterized in that: A bending avoidance groove (12) is concavely provided on the top surface of the lower die seat (1), and the bending avoidance groove (12) is located in the bending forming warping space (6).

7. The bending and forming material lifting device for a progressive die according to claim 1, characterized in that: A limiting block (58) is installed on the top surface of the cushion block (51) or the top bottom surface of the material lifting frame (52).

8. The bending and forming material lifting device for a progressive die according to claim 1, characterized in that: The first material lifting elastic member (4) and the second material lifting elastic member (53) are both nitrogen springs.

Images